Wrench



E. E. SIEVERTQ WRENCH.

APPLICATION FILED AUGz I2, 1920. 1,368,580. Patented Feb. 15, 1921.

UNITED STATES ERNEST E. SIEVERT, O33 MANISTEE, MICHIGAN.

WRENCH.

Specification of Letters Patent.

Application filed August 12, 1920. Serial No. 402,966.

To all whom it may concern:

Be it known that I, ERNEST E. Smvnnr, a citizen of the United States, residing at Manistee, in the county oi Manistee and State of Michigan, have invented certain new and useful Improvements in renches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in wrenches.

The principal object of the invention is to generally improve upon devices of this class by producing one including a jaw which is retained in various adjusted positions by means which is such that it permits it to be very easily and quickly moved toward and from the stationary jaw, this means being novel and very convenient to manipulate and retaining the jaw in the position to which it has been adjusted without permitting it to slip.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same Figure 1 is a side elevation of a wrench constructed in accordance with my invention.

Fig. 2 is a similar view with the movable jaw in section to more clearly disclose the improved locking means therefor.

Fig. 3 is an end elevation thereof.

Fig. 4: is a transverse section taken on the line 4-4 of Fig. 2, looking in the direction of the arrows.

Fig. 5 is a slightly modified form of the invention, with parts broken away to disclose the construction clearly.

Referring to the drawings, wherein the preferred embodiment of my invention is illustrated, the numeral 1 designates a shank, at the outer end of which is a laterally extending rigid jaw 2 and on the inner side of which are ratchet-teeth 3. Slidably mounted on this shank is a movable jaw 4:

which is provided in one side with a recess 5, in the outer wall of which a seat 6 is formed, the latter being at a point remote from the ratchet teeth 3. This seat consti- .I employ a spring 8, preferably movable tutes a bearing for the rounded end of the dog 7 Which is fulcrumed therein, the latter being provided at its free end with a plurality of teeth for engagement with said ratchet teeth. In order to retain the dog in effective engagement with theratchet teeth, of U-shape, the same having one of its ends anchored in the inner wall of the recess 5 and its other end secured to one side of the dog. I cum ploy novel means for disengaging the dog. This means preferably, consists of a yoke 9 whichis disposed in theslot 10 formed in the other side of the movable jaw, the arms of this'yoke straddling the tending into closeproximity of the inner ends of the slot 10, and the e.;tremities of these arms'being reduced as shown at 11 and laterally oft-set. These laterally oil-set extremities 11 are connected by a bar 12, and this bar in conjunction with them constitutes a cam-which bears on the inclined do and disengages it when the yoke 9 is mover in a direction transverse of the shank, as is obvious.

In Fig. 5 I have disclosed, as before stated, a slightly modified fi'orm of lily-ilk vention. By referring to this figure it will be seen that a different type oif wrench is disclosed. Thiswrench includes a shank 13 provided at its outer end with a recessed and slotted head l t which in turn carries a stationary jaw 15. At this point, I wish to mention that for the sake of convenience and clearness, the parts of the device disclosed in this form of the invention which are like the parts disclosed in the already described form, will be designated by the same numerals. To this end, the numeral 6 designates the. rounded seat in said recessed head in which the rounded end of the dog 7 is ifulcrumed, the latter being retained in position by the same type or spring 8 which coacts therewith in a like manner. The dog in this form of the invention is provided in one side with a notch 16, the purpose of which will *be hereinafter described. The movable jaw 17 carries a laterally extending shank 18 which is slidable in the slot in the head 14, this shank being provided along the edge adjacent the recess with ratchet teeth with which the teeth of the dog coact. A plunger 19 is employed. for the purpose oi disengaging the dog, the stem of the sameentending through Patentedeb. 15, 1 921.

shank 1 and era hole formed in the head 14 and the inner endthereot being seated in said notch 16 to insure effective cooperation of the parts 7, To adjust the jaw 4:, the'connecting por- 5 tion of the yoke 9 is pressed in, that is moved in a direction transverse of the shank 1, by the thumb or finger. Such movement of this yoke will cause the cam carried thereby to ride alongthe inclined dog in 10 such a manner as to disengage it. As soon as pressure on the yoke is released, the spring 8 will automatically return the dog to effective position so as to" retain the jaw in positionto whichit has been adjusted. To operatethe form of the inventiondis,- closedin Fig. 5, it is obvious that it is only necessary to press the plunger 19 inwardly which will disengage the dog and permit quick adjustment or" the movable jaw. 20 From. the foregoingdescription taken in connection with the accompanying drawings, the operation of my device will'be readily understood, therefore, further de scription is deemed unnecessary.

claim; a V a A wrench of the type'described comprising a stationary jaw and a movable jaw, one "of said jaws including a shank provided alongone side with ratchet-teeth, and the other jawbeing provided with a recess in which a rounded seat is formed, a pawl arranged in said recess and extending at an acute angle with respect to said shank, one ofits ends being rounded and loosely ful- 'crumed in said seat, its other end being beveled and provided with a plurality of teeth engageable with said ratchet-teeth, means carried by one of the jaws and engageable with one edgeof the pawl for disengaging 40 the. latter, and aspring arranged in the aforesaid recess and bearing against the opi'n'y hand.

positeedge of the pawl for retaining it in position in said seat and for holding it in eflective engagement with said ratchetteeth.

2. A wrench comprising a shank provided along one side with ratchet-teeth and at one end with a rigid jaw, a movable jaw slidable on said shank, being provided-in one end with a vertical recess, constituting an open chamber, being also provided in its opposite sides with opposed horizontal slots communicating with said chamber, the said chamber having a rounded seat formed in an upper corner remote from said shank, a dog arranged in said chamber and extend ing at an acute angle with respect to said shank, one end thereof being rounded and detachably fulcrumed in said seat, the other end being beveled and provided with a pluralityof teeth engageable with theatoresaid ratcl1et teeth,'a substantially rectangular ring-like member surrounding and slidable on the shank, being disposed in said opposed horizontal slots and having its inner end extending into said chamber, said inner end being laterally offset and reduced in width and forming a cam bearing on the upper edge ofthe dog for disengagingthe latter when said member is moved toward or crosswise of said shank, and a V-shaped spring in said chamber, having one of its ends anchored in the lower wall of said chamber and its opposite end secured to the lower edge of said dog to retain-the latter in position in its seat and to-hold it in effective engagement with the aforesaid ratchet-teeth. In testimony whereof I have hereunto set nnnnsr E. srnvnn'rf V 

